/ Dictionary / Index M microgamete: Meaning and Definition of Find definitions for: mi•cro•gam•ete Pronunciation: (mī"krō-gam'ēt, -gu-mēt'), [key] — n. Cell Biol. (in heterogamous reproduction) the smaller and, usually, the male of two conjugating gametes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. microfossil microgram Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language